gistfile1.txt

" Make CTRL-T work correctly with goto-definition.
setlocal tagfunc=CocTagFunc

nmap <leader>gre <Plug>(coc-references)
nmap <leader>grn <Plug>(coc-rename)

" nmap <leader>ge <Plug>(coc-diagnostic-info)
nmap <leader>ge :<C-u>CocList diagnostics<CR>
nmap <leader>gp <Plug>(coc-diagnostic-prev)
nmap <leader>gn <Plug>(coc-diagnostic-next)

nmap <leader>gi <Plug>(coc-implementation)
nmap <leader>gy <Plug>(coc-type-definition)
nmap <leader>gd <Plug>(coc-definition)

nmap <silent> K :call <SID>show_documentation()<CR>

" Search workspace symbols.
nnoremap <leader>s  :<C-u>CocList -I symbols<CR>

" Outline
nnoremap <leader>o  :<C-u>CocList outline<CR>

nnoremap <silent> K :call CocAction('doHover')<CR>

" Trigger auto-completion with C-space.
inoremap <silent><expr> <c-space> coc#refresh()
" Make <TAB> select next completion and Shift-<TAB> to select previous.
function! s:check_back_space() abort
  let col = col('.') - 1
  return !col || getline('.')[col - 1]  =~ '\s'
endfunction
inoremap <silent><expr> <TAB>
  \ pumvisible() ? "\<C-n>" :
  \ <SID>check_back_space() ? "\<TAB>" :
  \ coc#refresh()
inoremap <silent><expr> <S-TAB>
  \ pumvisible() ? "\<C-p>" :
  \ <SID>check_back_space() ? "\<S-TAB>" :
  \ coc#refresh()
" Make <CR> confirm completion.
inoremap <expr> <CR> pumvisible() ? "\<C-y>" : "\<CR>"

gistfile2.txt

{
    "diagnostic.enable": true,
    "diagnostic.virtualText": false,
    "diagnostic.joinMessageLines": true,
    "diagnostic.checkCurrentLine": true,
    "diagnostic.messageTarget": "float",
    "diagnostic.level": "information",
    "suggest.autoTrigger": "none",
    "signature.enable": false,
    "coc.preferences.snippets.enable": false,
    "rust-analyzer.diagnostics.enable": false,
    "rust-analyzer.inlayHints.chainingHints": true,
    "rust-analyzer.serverPath": "/home/omer/.cargo/bin/rust-analyzer",
    "languageserver": {
        "ocaml-lsp": {
            "command": "opam",
            "args": ["config", "exec", "--", "ocamllsp"],
            "filetypes": ["ocaml", "reason"]
        }
    }
}